This a corpus for building cross-domain Conversational text-to-SQL systems. It is the dialog version of the Spider [1]} and SParC [2]} tasks. CoSQL consists of 30K dialog turns and 10K annotated SQL queries, obtained from a Wizard-of-Oz collection of 3K conversations querying 200 complex databases spanning 138 domains. Each conversation simulates a real-world DB query scenario with a crowd worker as a user exploring the DB and a SQL expert retrieving answers with SQL, clarifying ambiguous questions, or otherwise informing of unanswerable questions.
